比较在不同的灭菌时间点生物指示剂与化学指示卡对压力蒸汽灭菌监测的效果

Objective To compare the monitor effects between the 3M Attest 1292 biological indicator and the 3M 1250 chemical indication cards by autoclave sterilization. Methods Two biological indicators, two chemical indication cards, and one 200 ℃ thermometer were placed in the sterilizer to observe the results after 0. 5 min, 1min, 2 min, 3 min and 4 min sterilization at 134℃ respectively. Results The positive rates of the biological indicators at each time point were 100% , 100% , 90% , 20% ,0% ; those of the chemical indicators were 100%, 90% , 10%, 0%, 0%. Conclusions 3M Attest 1292 biological indicator can provide a more reliable guarantee, fast and practical monitoring methods to the autoclave sterilization. The monitor effect of chemical indicators are not accurate but fast The common use of biological indicators and chemical indication cards can be more accurate for the monitor by autoclave sterilization, and it is conducive to sterilizing work.     

比较在不同的灭菌时间点生物指示剂与化学指示卡对压力蒸汽灭菌监测的效果

目的 比较3M Attest 1292生物指示荆与3M 1250化学指示卡对压力蒸汽灭菌监测的效果.方法 将2个生物指示剂、2个化学指示卡和1个留点温度计200℃置于标准试验包中心部位,将标准试验包置于134℃脉动真空灭菌器内排气口上方分别作0.5 min、1 min、2 min、3 min、4 min的灭菌后观察结果.结果 生物指示剂在各个时间点的阳性率分别为100%、100%、90%、20%、0%;化学指示卡分别为:100%、90%、10%、0%、0%.结论 3M Attest 1292生物指示剂为压力蒸汽灭菌结果提供了可靠保证的、快速实用的效果监测方法.化学指示剂对灭菌结果监测不够准确但快速.生物指示剂和化学指示剂相辅相成,两者共同使用可以更加准确地监测压力蒸汽灭菌效果.有利于工作的开展.

Abstract：

Objective To compare the monitor effects between the 3M Attest 1292 biological indicator and the 3M 1250 chemical indication cards by autoclave sterilization. Methods Two biological indicators, two chemical indication cards, and one 200 ℃ thermometer were placed in the sterilizer to observe the results after 0. 5 min, 1min, 2 min, 3 min and 4 min sterilization at 134℃ respectively. Results The positive rates of the biological indicators at each time point were 100% , 100% , 90% , 20% ,0% ; those of the chemical indicators were 100%, 90% , 10%, 0%, 0%. Conclusions 3M Attest 1292 biological indicator can provide a more reliable guarantee, fast and practical monitoring methods to the autoclave sterilization. The monitor effect of chemical indicators are not accurate but fast The common use of biological indicators and chemical indication cards can be more accurate for the monitor by autoclave sterilization, and it is conducive to sterilizing work.     

包装器具对手术器械包灭菌质量的影响

目的 探讨合适的手术器械包装器具,提高手术器械灭菌质量.方法 将选定的手术器械包1 000个随机分成两组,对照组(500个)和实验组(500个).对照组用传统的有孔打包盘作为包装器具包装灭菌,实验组用打包篮筐作为包装器具包装灭菌,观察两组手术器械包灭菌质量.结果 生物监测和包外化学指示标签全部合格,对照组手术器械包湿包率为8%、包内化学指示卡变色合格率96%,实验组手术器械包湿包率为0.04%、化学指示卡变色合格率100%,两者比较具有显著性差异(P＜0.01).结论 打包篮筐包装手术器械包的灭菌质量比打包盘包装手术器械包的灭菌质量好.

Abstract：

Objective To Explore suitable packaging equipment of operation instrument to improve sterilization quality of operation instrument Methods A total of 1 000 packages operation instruments were randomly divided into two groups,traditional packaging tray with holes was used to package and sterilize in control group,packaged basket was used to package and sterilize in experimental group.The sterilization qualities of the two groups'operation instruments were observed.Results Biology monitoring and chemical indicators labeling were all qualified,the packet rate of operation instrument was 8%, the passing rate of discoloration of the chemical indicator card was 96% in control group,the wet packet rate of operation instrument was 0.04%, the passing rate of discoloration of the chemical indicator card was 100% in experimental group,there was significant difference between the two groups (P<0.01).Conclusions Sterilization quality of packaged baskets as packaging equipment is better than that of packaging tray as packaging equipment.     

Overview of chemical steam sterilization indicators

<正>1 Introduction Infection control involves lots of information about consumables,so an overview of chemical steam sterilization indicators is provided to help healthcare staffs know recent developments of chemical steam sterilization indicators.The main method for sterilization of medical devices is steam sterilization,and the sterilization mechanism is destroying the protein strings by coagulation[1-2].Without the complete protein strings,the organisms can     

加强消毒供应室管理整改和人员的培训对灭菌物品合格率的影响

Objective To study effects of strengthening rectification measures and personnel training in disinfection and supply room on the passing rate of sterilization articles. Methods The management methods were improved and the personnel were trained in disinfection and supply room. The passing rate of sterilization articles was compared with before applying them. Results The passing rate of sterilization articles after strengthening rectification and personnel training were higher than those of before applying them. The difference was statistically significant (P＜0.05) . Conclusions To strengthen rectification measures and personnel training in disinfection and supply room can improve the passing rate of sterilization articles.     

加强消毒供应室管理整改和人员的培训对灭菌物品合格率的影响

Objective To study effects of strengthening rectification measures and personnel training in disinfection and supply room on the passing rate of sterilization articles. Methods The management methods were improved and the personnel were trained in disinfection and supply room. The passing rate of sterilization articles was compared with before applying them. Results The passing rate of sterilization articles after strengthening rectification and personnel training were higher than those of before applying them. The difference was statistically significant (P＜0.05) . Conclusions To strengthen rectification measures and personnel training in disinfection and supply room can improve the passing rate of sterilization articles.     

体外诱导大鼠骨髓间充质干细胞向心肌细胞定向分化的研究

Objective To investigate the role of cardiac myocytes in the differentiation of bone marrow mesenchymal stem cells (MSCs) to cardiac myocytes and the biological properties in the course. Methods The bone marrow of the extremities of the rats was flushed, and bone marrow MSCs were obtained by method of density gradient centrifugation. They were cultured. The second passage of cultured MSCs were labelled with bromodeoxyuridine (BrdU). The cardiac myocytes were obtained from the apex of rat heart with trypsin digestion method, and they were cocultured with labeled MSCs. The developmental changes of bone marrow MSCs were observed under light microscope with immunohistochemical staining for BrdU and a-sarcomeric actin on the 3rd day, anti electron microscopic examination on the 5th day. Results MSCs proliferated fast in primary culture and subculture, positive rate was (90. 34± 2. 31)%, and there was statistical difference when it compared with control group [(4.07±1.35)%, P<0. 01]. The morphology of MSCs changed significantly after coculture. There were new cells nuclei of which were positively stained for BrdU and its cytoplasm positive for actin. Under transmissive electron microscope, sarcomeres like structure and abnormal Z line were observed in cytoplasm. Conclusion Cardiac myocytes can effectively induce bone marrow MSCs to differentiate into cardiac myocytes by coculturing.     

体外诱导大鼠骨髓间充质干细胞向心肌细胞定向分化的研究

Objective To investigate the role of cardiac myocytes in the differentiation of bone marrow mesenchymal stem cells (MSCs) to cardiac myocytes and the biological properties in the course. Methods The bone marrow of the extremities of the rats was flushed, and bone marrow MSCs were obtained by method of density gradient centrifugation. They were cultured. The second passage of cultured MSCs were labelled with bromodeoxyuridine (BrdU). The cardiac myocytes were obtained from the apex of rat heart with trypsin digestion method, and they were cocultured with labeled MSCs. The developmental changes of bone marrow MSCs were observed under light microscope with immunohistochemical staining for BrdU and a-sarcomeric actin on the 3rd day, anti electron microscopic examination on the 5th day. Results MSCs proliferated fast in primary culture and subculture, positive rate was (90. 34± 2. 31)%, and there was statistical difference when it compared with control group [(4.07±1.35)%, P<0. 01]. The morphology of MSCs changed significantly after coculture. There were new cells nuclei of which were positively stained for BrdU and its cytoplasm positive for actin. Under transmissive electron microscope, sarcomeres like structure and abnormal Z line were observed in cytoplasm. Conclusion Cardiac myocytes can effectively induce bone marrow MSCs to differentiate into cardiac myocytes by coculturing.     

体外诱导大鼠骨髓间充质干细胞向心肌细胞定向分化的研究

Objective To investigate the role of cardiac myocytes in the differentiation of bone marrow mesenchymal stem cells (MSCs) to cardiac myocytes and the biological properties in the course. Methods The bone marrow of the extremities of the rats was flushed, and bone marrow MSCs were obtained by method of density gradient centrifugation. They were cultured. The second passage of cultured MSCs were labelled with bromodeoxyuridine (BrdU). The cardiac myocytes were obtained from the apex of rat heart with trypsin digestion method, and they were cocultured with labeled MSCs. The developmental changes of bone marrow MSCs were observed under light microscope with immunohistochemical staining for BrdU and a-sarcomeric actin on the 3rd day, anti electron microscopic examination on the 5th day. Results MSCs proliferated fast in primary culture and subculture, positive rate was (90. 34± 2. 31)%, and there was statistical difference when it compared with control group [(4.07±1.35)%, P<0. 01]. The morphology of MSCs changed significantly after coculture. There were new cells nuclei of which were positively stained for BrdU and its cytoplasm positive for actin. Under transmissive electron microscope, sarcomeres like structure and abnormal Z line were observed in cytoplasm. Conclusion Cardiac myocytes can effectively induce bone marrow MSCs to differentiate into cardiac myocytes by coculturing.     

体外诱导大鼠骨髓间充质干细胞向心肌细胞定向分化的研究

Objective To investigate the role of cardiac myocytes in the differentiation of bone marrow mesenchymal stem cells (MSCs) to cardiac myocytes and the biological properties in the course. Methods The bone marrow of the extremities of the rats was flushed, and bone marrow MSCs were obtained by method of density gradient centrifugation. They were cultured. The second passage of cultured MSCs were labelled with bromodeoxyuridine (BrdU). The cardiac myocytes were obtained from the apex of rat heart with trypsin digestion method, and they were cocultured with labeled MSCs. The developmental changes of bone marrow MSCs were observed under light microscope with immunohistochemical staining for BrdU and a-sarcomeric actin on the 3rd day, anti electron microscopic examination on the 5th day. Results MSCs proliferated fast in primary culture and subculture, positive rate was (90. 34± 2. 31)%, and there was statistical difference when it compared with control group [(4.07±1.35)%, P<0. 01]. The morphology of MSCs changed significantly after coculture. There were new cells nuclei of which were positively stained for BrdU and its cytoplasm positive for actin. Under transmissive electron microscope, sarcomeres like structure and abnormal Z line were observed in cytoplasm. Conclusion Cardiac myocytes can effectively induce bone marrow MSCs to differentiate into cardiac myocytes by coculturing.